The concentrations (µg/g) of toxic heavy metals in vegetable samples (n = 16) collected from the study area.

Table 2: The concentrations (µg/g) of toxic heavy metals in vegetable samples (n = 16) collected from the study area.

Sampling sites	Suburbs	Toxic heavy metals
		As	Cd	Pb	Hg
	Atonsu	1.998	0.836	4.707	< LOD
Farms	Chirepatre	2.938	0.084	3.809	< LOD
	KNUST	2.585	0.191	4.002	< LOD
	Tanoso	0.294	0.275	2.870	< LOD
	Ayigya	1.410	0.191	2.943	0.020
Markets	Kejetia	1.293	0.287	3.661	< LOD
	Kwadaso	3.114	0.191	3.419	< LOD
	Santasi	1.293	0.550	2.585	< LOD
Street Food Vending Sites	Aboabo	2.125	0.270	1.872	0.010
	Asafo	1.184	0.367	1.687	< LOD
	Bantama	3.812	0.741	2.882	< LOD
	KNUST	1.036	0.330	2.315	< LOD
	Adum	2.187	0.151	6.337	< LOD
	Airport Roundabout	4.101	0.028	1.417	< LOD
	Fante New Town	1.100	0.160	4.190	< LOD
Cafetaria	Suame	3.451	0.253	2.814	< LOD

< LOD = Below detectable limits.